Organic polymers containing TCNQ complexes and stabilized against the emission of HCN

Abstract

The invention relates to plastics materials of high electrical conductivity containing TCNQ complexes and stabilized against the emission of HCN and to mouldings, films and coatings of such materials, as well as to the use of the plastics material for the production of antistatic foils and coatings onto substrates.

We claim: 
     
       1. A composition which comprises: (a) a plastic material   (b) a charge transfer complex of tetracyanoquinodimethane, and   (c) an effective amount of a metal cation to stabilize the composition against the emission of HCN wherein said metal cation is Cu(II), Cu(I), Zn(II), Pd(II), Ag(I), Cd(II), Pt(II), Au(III) or Hg(II).   
     
     
       2. A plastics material as claimed in claim 1 wherein the anion associated with said metal cation is an acetate anion, 2-ethylhexanoate anion, stearate anion, benzoate anion, F.sup.⊖, Cl.sup.⊖, Br.sup.⊖, I.sup.⊖, ClO 4 .sup.⊖, nitrate, sulfate, phosphate, acetyl acetonate, acetoacetate, salicylate or ethylene diamine tetracetate. 
     
     
       3. A plastics material as claimed in claim 1 or 2, comprising from 0.005 to 5 moles of the stabilizing metal cation per mole of said charge tansfer complex. 
     
     
       4. Antistatic films and extrusions comprising a plastics material according to claim 1 or 2. 
     
     
       5. An antistatic coating on a substrate comprising a plastics material according to claim 1 or 2. 
     
     
       6. An antistatic foil comprising a plastics material according to claim 1 or 2.